Fix promise test using a worker/semaphore hack
Fix promise test using a worker/semaphore hack

(looks like we need support for async tests)

ashwinrayaprolu1984/ringojs,oberhamsi/ringojs,Transcordia/ringojs,ringo/ringojs,oberhamsi/ringojs,Transcordia/ringojs,ringo/ringojs,ashwinrayaprolu1984/ringojs,Transcordia/ringojs,Transcordia/ringojs,ringo/ringojs,ashwinrayaprolu1984/ringojs,ringo/ringojs,oberhamsi/ringojs,ashwinrayaprolu1984/ringojs